Add triangle at bottom of material design tab mat-ink-bar
问题 I want to change the style of the mat-ink-bar for Angular material tab. I wanted to archieve a design like this: Jsfiddle example The problem is that the mat-ink-bar already absolute positioned and i cannot display my ::after element. Is there a way how i can archieve this ? Here is what i tried on stackblitz: Mat tab on stackblitz my style are located inside the style.css . The triangle at the bottom is hidden if you use the dev tool. I could not show it using z-index .. Any help would be